"Tsk, you kid. Sardin was slapped by Luo Heng, although his face was a little unaccustomed, but his heart was still very useful.

Satin looked at the all-copper blower on his forging table and said happily, "Good, good, this is like the style of our dwarves. ”

Copper, in this era, is money, Luo Heng is difficult to pay attention to what a pile of money makes of tools, a two-meter diameter all-copper blower, with hundreds of catties of copper.

However, these human coppersmiths are not only skilled in their workmanship, but the blower is very ornately made, and there are some marks on it with special tools, which look like various patterns.

Of course, the Sardinia blower here has such a pattern, and the others are not matched, and the name of Sardinia is still on the blower.

"Good, good. "The more Satin looked at it, the more I liked it.

Sardin personally went to Rosen to ask for some humans, and Rosen was responsive to the dwarven chamber of commerce, but he was a little suspicious when he saw that the dwarven chamber of commerce wanted a lot of humans.

When Rosen came in with dozens of humans, the all-copper blower glowed with money in the light of the forged furnace fire.

"See, the great invention of our dwarf clan, the god of forging is above!" Seeing Rosen's stunned appearance, as well as the white~idiot look of those humans, Satin said loudly with great joy.

Rosen asked, "Master Sardinia, who are you?"

"You don't understand, two people come here. Satin commanded.

The two humans cautiously approached the all-copper blower, and the two of them were shocked, this is that their own lord does not have such a huge bronze weapon.

How much food does this have to be exchanged for?

The two humans sat cautiously, there was no way, it was not a good thing to be too tall.

The air intakes on both sides of the blower were made of wire nets, which were ordered by Satina, otherwise they would have been learned by others.

Rosen saw two people gently turn the bronze vessel, and the flames in the forge suddenly burst into blue flames, and his eyes were about to pop out.

"See, our dwarven clan's great invention can increase the forging speed by four times. Satin brandished a forging hammer of hundreds of pounds and said loudly.

"The god of forging is above. The rest of the dwarves shouted one after another, and they were grateful to Luo Heng in their hearts.

It is more difficult to only bring the previous forging, the temperature is not enough, and the burning forging material is very difficult to fight, but now it is good, the temperature is high, the forging material is burned as soft as bread, a few hammers are smashed down, you can fold it once, and due to the increase in wind and the addition of fuel, you can forge two plate armor materials at a time, take turns forging, the speed is leveraged, and the dwarf who originally pressed the airbag, that did not want to forge, but still wanted to press the airbag.

So the liberated dwarves watched the two humans do what they did with ease, and the damned humans still had time to chat, and then look at themselves as tired and dying.

"Captain Rosen, please give a message to the general, we dwarves want these people. Satin gestured and spoke.

"I'll report it. "Rosen naturally knew what Satin meant, and Satin was afraid that the dwarven clan's forging skills would be stolen out.

Of course, there are also a lot of humans in the dwarf kingdom, so when Lawson chooses, he chooses more suitable people and has no skills.

More than 30 coppersmiths continue to forge all-copper blowers, the speed is very fast, the fan blades are forged to a certain thickness, and then it is cut, with special tools, and then polished.

Then when assembling, the gap is sealed with gum, and it is a complete all-copper blower.

Sardinia had to set up and build a bigger smelting furnace, the main reason was that the material was consumed too quickly, the materials that were originally a week were now finished in more than a day, there was no way, this kind of burning soft material was too fast.

On Luo Heng's side, Luo Heng looked at the melted fine iron, which is similar to steel, and sighed a little, it was too slow, and the flame temperature of the charcoal was still too low.

However, in this cave, using coal is definitely not a good choice, so Luo Heng will also settle for the time being.

Luo Heng uses casting, using wooden molds, fortunately, this dwarf has a full set of casting tools, that is, crucibles and the like, it is said that this crucible is a magic item, which can smelt a hundred catties of refined iron at a time.

When the iron melts, it is poured into a mold and then waited for the mold to cool.

While waiting for the mold to cool down, Luo Heng found Lawson and asked for saltpeter and sulfur, but saltpeter and sulfur both need to be refined.

Saltpeter is placed directly in the water, filtered several times, and then boiled to dry the water, to get nitrate with relatively high purity.

Refining sulfur is more complicated, so Luo Heng specially made a distillation utensil, of course, Luo Heng opened the mouth and made it by a coppersmith.

The first step is to melt the sulfur ore and filter impurities, and the second step is to heat it to a certain temperature, distill, and the distilled sulfur gas is cooled to obtain pure sulfur.

"Ahem. "The sulfur gas is toxic, and if it leaks slightly, it will be uncomfortable, but fortunately, Luo Heng didn't need much at the beginning.

"Demonic breath. Satin hurried over, staring around.

Luo Heng was also confused, Luo Heng hurriedly explained in a low voice, and Satin left with a suspicious expression.

And those coppersmiths looked at Luo Heng's eyes strangely, Luo Heng asked these coppersmiths to press the copper pipes with gum mixed linen and copper hoops, and the other section was placed in a big wooden barrel, which was full of water.

Finally refined a part of the sulfur, Luo Heng used to make several materials into powder, and then carefully mixed it, absolutely no iron can be used, as for the formula, everyone knows.

Then make it into pellets*, the method is also super simple, of course, sometimes the knowledge is a little bit thorough.

The mother cannon of the mother cannon, after cooling, still needs to be polished, especially the inner chamber, Luo Heng asked the idle blacksmith to directly use the wood to put linen on the list and polish it slowly.

The rest is the subtube, and the casting of the subtube is even simpler, of course, as for whether there is any dark disease, Luo Heng specially asked Master Sardin to give advice, Sardin just touched it, knocked it, and pointed out that the two subtubes had dark diseases.

Just as Luo Heng was about to make a simple integration of * and projectiles, the orcs outside the fortress began to attack.

"Hi, hi, hi. "The orcs are like the tide, black and pressing, and the orcs also build huge siege towers, which are tied by huge trees, which are hundreds of meters high, and Luo Heng is frightened when he sees it, for fear that it is a tofu scum project.

"See, these guys covered the siege towers with animal skins, and the animal skins were brushed with tree oil, and rolled intricately in the sand, and after a few times they came down, and formed a defense that was not afraid of fire and arrows, unless they were directly hit by trebuchets. Sardin and Luo Heng stood at the observation port behind the arrow stack and explained.

The other dwarves looked at Luo Heng with envy, now that Sardin has been completely liberated in the past few days, there is no need to forge it himself, and due to the change of the blower, the other dwarf forgers found that their forging level has been greatly improved.

Coupled with Satin's guidance, these forgers have been very confused about what Luo Heng has done privately, but some people are not optimistic, because everyone has seen what Luo Heng made, isn't that thing just an enlarged version of a musket, what's the use?

Sardin looked at Luo Heng differently, because Luo Heng said that he knew the * formula, which made Sardin excited and worried, what if the formula failed?

Luo Heng looked very carefully, Sardin explained on the side, Luo Heng finally understood that it was the ordinary orcs who chased him that day, and now there is a big guy three meters tall below, that is the royal family of the orc clan, tiger people, lion people, leopard people, those whose waist circumference and size are one to one are bear people, and those who are ten or twenty meters tall are Beamon giant beasts, who can fight hand-to-hand with dragons.

Almost invincible on the battlefield, soon the orc army stopped thousands of meters from the fortress.

Most of these orcs have mounts, and mounts are also all kinds of creatures, among which behind this orc army, a huge mount, like a huge crocodile, on the back of the crocodile, there is a soft collapse, on which sits a guy in gorgeous costumes.

"Those are the sacrifices of the Orc Temple, and they begin. Satin began.

Luo Heng saw a priest dressed in white or white fur on the back of the huge crocodile, came to the giant crocodile's back and struck a big drum.

Knock knock!

The rapid drum beat is very loud and gives people a feeling of oppression.

"Hey!" the tens of thousands of orcs in front of them roared in unison, and then they rode their mounts towards the fortress.

Luo Heng muttered in his heart, are these orcs stupid, do they still have to ride mounts to attack the city.

"Be careful to dodge, be careful to dodge. At that moment, a knight behind him ran quickly through the street, shouting loudly.

At a distance of thousands of meters, tens of thousands of orcs came to a place hundreds of meters in front of the fortress like a gust of wind, and then these orcs grabbed ~ a rope from behind the mount, and then threw the rope towards the fortress.

Whoosh!

Luo Heng heard the sound of the distance breaking through the air, and one by one the arrows shot towards the orcs below, which were as long as javelins to be precise.

Poof!

Luo Heng's eyes widened, and he almost couldn't believe that the things thrown by these orcs actually hit the fourth layer, that is, the first layer of Luo Heng's head.

A few ropes landed not far from Luo Heng with something, and the thing was smashed at once, and then there was a buzzing sound, and I don't know what insects flew out all of a sudden.

"Hand of Flame. At this time, Luo Heng heard a voice, on the street behind him, a man wearing a mage's robe stretched out his hand, and a huge flame suddenly pressed towards the insect, this flame was like a person's palm, countless insects were wrapped in flames, and there was nothing left.

Yes!

A human soldier screamed miserably, and Luo Heng saw blood flowing from the soldier's neck, and a wasp-sized insect suddenly burrowed into the soldier's neck.

"Energy concussions. The soldiers around him dispersed at once, and the mage spoke again, and the soldier whose neck was spurting blood suddenly became a pile of minced meat, as if he had been directly squeezed by some kind of energy.

Then there was a burst of flames from this pile of minced meat, and the scorching smell made Luo Heng almost vomit, but the soldiers around him were silent.

In the end, the burned armor was put away by the criminals with handcuffs and shackles, and Luo Heng finally knew why there were so many discarded equipment in the dwarven chamber cave.

The mage closed his eyes and stood at the back of the street, and Luo Heng realized that there were several mages on the street.

The massive siege towers began to move slowly, and the bears underneath the towers carried thick wooden shields.

"Trebuchet ready, trebuchet ready. Another knight ran by, shouting loudly.

PS: Ask for collection, flowers.